How to spin the propeller
If you are creating a photograph of a propeller-driven craft in flying
state, and forgot to spin the propeller, then it is an unforgiven sin.
But how to turn it? should it be spinned physically while taking the photo?
Of course not. It will be troublesome to physically spin the propeller,
imagine if it is a model of a four-engined aeroplane.
The original photograph is as static, no propeller was moving. It will
be turned digitally in the computer.
Now let see the following example.
